Improvement in packing-boxes for rotary steam-cylinders



NE FETES, YHOTO-LITHOG-MPHER, WASHINGTON. D, C.

SAMUEL DEAcoN AND JOHN RUSSELL, or LAWRENCE, MASSACHUSETTS.

Letters Patent No. `109,`722, dated November 29, 1870. o

IMPROVEMENT IN PACK-lNG-BOXES'FOR RVOTARV STEAM-CYLINDERS.

The Schedule referred to in these Letters Patent and making part ci the same.

To all whom it may concern.-

Be it known that we, SAMUEL DEAcoN and JOHN RUSSELL, of Lawrence, in the county ot Essex and State of Massachusetts, have invented a new and improved Packing-Box for Rotary Steam-Cylinders ;and

we do hereby declare that the following is a full, clear,

and exact description thereof', which will enable others This invention relates to a new packing-box for-ref' volving steam-cylinders, and consistsy `in the arrangement of a nut that serves to clamp the packing between two cones, and'which, instead of working o'n ascrew-thread, is moved longitudinally by contact with a fixed cam, as hereinafter more fully described.

A-in the drawing represents the tubular stationary shaft of a rotary steam-cylinder.

B is the stuffing-box, secured by bolts 'to one end of o the cylinder so as to embrace the shaft A.

On the inner end of the tube, close to the cylinder,

within thebox B, issecnred a stationary sleeve, O, with a conical outer end.

D is the nut for crowding the packing against the cone O. f

The inner y,endof this nut is also beveled, to be conical, as showir'in fig. l, so'that the packing is clampedbetween the two conical ends.

The outer end of 'the' nut is enlarged, and iits over part of atube, E, which is, by a screw, b, locked to the shaftA. p

The tube E constitutes a stationary cam having projecting spiral cam-edges, as shown, against which simla'r edges of vthe nut D abut. When the tube E has been secured to the shaft A, the nut can be turned, and will, ou the carn-edg.e, 'be moved against the packing, to securely clamp the same. It can then be locked by a screw, c. When necessary,the nut can againbe turned, to clamp the packing still iirmer, and locked again.

Having thus described our invention,

We claim as new and desire to secure by Letters- Patent--- The nut D, adjusted on the cam E, and arranged to clamp thepacking between two conical ends, substantiallyA as herein shown and described.

. SAMUEL BEACON.

JOHN RUSSELL.

Witnesses:

-JoHN DARBY, REIJBEN HAYMAN. y 

